Malicious PDF — malware analysis report

Heuristics 7

• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://trafficel.ru/123?keyword=hd+movie+apk+for+pc+windows+10 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4377935/normal_5f8e168967292.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368229/normal_5f9d70d98526a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369189/normal_5f8e603c6ea65.pdfIn PDF document text
  • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/613a711ec7ef.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366989/normal_5fa468bf6a514.pdfIn PDF document text
  • https://wawaxotev.weebly.com/uploads/1/3/4/3/134368025/8292210.pdfIn PDF document text
  • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/f1a75626ec5047c.pdfIn PDF document text
  • https://zefufewik.weebly.com/uploads/1/3/4/3/134374544/lalirugegiwogar.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391909/normal_5f95b858df643.pdfIn PDF document text
  • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/fegetururiz.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/tigovatolis/tajav.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/99736053-8d54-49ab-a243-bf0b8ef63595/schnuffel_bunny_song.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn PDF document text

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